One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,22,27,21,26,35,43)(19,23,30,37,29,25,41,42)(20,31,34,45,33,24,38,40)(28,39,44,48,32,36,46,47)(2,5)(3,7)(9,11,12,15)(10,13,14,16)(17,19,21,29)(18,23,26,25)(20,32,33,28)(22,30,35,41)(24,39,31,36)(27,37,43,42)(34,46,38,44)(40,48,45,47)(10,14)(11,15)(17,20,22,34,21,33,35,38)(18,24,27,40,26,31,43,45)(19,28,30,44,29,32,41,46)(23,36,37,47,25,39,42,48)(1,3,4,7)(2,6,5,8)(10,14)(13,16)(17,19)(18,25)(20,28)(21,29)(22,30)(23,26)(24,39)(27,42)(31,36)(32,33)(34,44)(35,41)(37,43)(38,46)(40,48)(45,47)(2,5)(6,8)(18,26)(19,29)(24,31)(27,43)(28,32)(30,41)(40,45)(44,46) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.